Tropical savanna climates have monthly mean temperature above 18°C (64°F) in every month of the year and typically a pronounced dry season, with the driest month having precipitation less than 60mm (2.36 in) of precipitation. In essence, a tropical savanna climate tends to either see less rainfall than a tropical monsoon climate or have more pronounced dry seasons than a tropical monsoon climate. Tropical savanna climates are most commonly found in Africa, Asia and South America. The climate is also prevalent in sections of Central America, northern Australia and North America, specifically in sections of Mexico and the state of Florida in the United States.

The Köppen Climate Classification subtype for this climate is "Aw". (Tropical Savanna Climate).

The average temperature for the year in Arrachart is 80.0°F (26.7°C). The warmest month, on average, is February with an average temperature of 82.0°F (27.8°C). The coolest month on average is July, with an average temperature of 76.0°F (24.4°C).

The highest recorded temperature in Arrachart is 98.0°F (36.7°C), which was recorded in November. The lowest recorded temperature in Arrachart is 63.0°F (17.2°C), which was recorded in July.

The average amount of precipitation for the year in Arrachart is 35.5" (901.7 mm). The month with the most precipitation on average is January with 10.4" (264.2 mm) of precipitation. The month with the least precipitation on average is July with an average of 0.2" (5.1 mm). In terms of liquid precipitation, there are an average of 30.0 days of rain, with the most rain occurring in March with 9.5 days of rain, and the least rain occurring in January with 0.0 days of rain.